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Find the radius of a circle whose circumference is :- (1) 52.8 cm(2) 42 cm(3) 6.6 kmplease give the answer with solution!!! |
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Answer» Given CIRCUMFERENCE, C = 52.8 cmWe KNOW that the circumference of the circle = 2 π R Therefore radius, r = C/2 π r = (52.8 × 7)/ (2 × 22) r = 369.6/ 44 r = 8.4 cm(ii) Given circumference, C = 42 cm We know that the circumference of the circle = 2 π r Therefore radius, r = C/2 π r = (42 × 7)/ (2 × 22) r = 294/ 44 r = 6.68 cm(iii) Given circumference, C = 6.6 km We know that the circumference of the circle = 2 π r Therefore radius, r = C/2 π r = (6.6 × 7)/ (2 × 22) r = 46.2/ 44 r = 1.05 km |
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